#include <iostream>

using namespace std;

int main() {
    int i;
    double d;

    int& r = i;
    double& s = d;

    i = 5;
    cout << "value of i :" << i << endl;
    cout << "Value of i reference :" << r << endl;

    d = 11.7;
    cout << "Value of d :" << d << endl;
    cout << "Value of d reference :" << s << endl;

    return 0;
}